I'm seriously contemplating using a spray-on truck bedliner product as a portion of the paint finish for my current WBO bike but wondering what pitfalls I may encounter. I am going to experiment with it on the inside of the fender to start.
Bed coatings are polyurea, not sure that is the same thing as polyurethane?I believe that Rhino Liner stuff is just polyurethane applied in a proprietary way - certain thickness, certain colorings, certain way of spraying it, but ultimately just polyurethane.
I also think you'd find that it goes on a little too thick - that it would require reaming it out of any openings it got into, that it would totally fill any threads in completely, etc.
If you wanted to use a similarly tough coating, you'd probably be better off layering polyurethane on a little at a time rather than one or more thick coatings the way they do truck beds.
These are guesses only, but if you pursue this, you'll really want to experiment with it before putting it on anything you value.